BepiColombo Mio Observations of Low‐Energy Ions During the First Mercury Flyby: Initial Results

Yuki Harada,Sae Aizawa,Yoshifumi Saito,Nicolas André,Moa Persson,Dominique Delcourt,Lina Z. Hadid,Markus Fraenz,Shoichiro Yokota,Andréi Fedorov,Wataru Miyake,Emmanuel Penou,Alain Barthe,Jean‐André Sauvaud,Bruno Katra,Shoya Matsuda,Go Murakami

Geophysical Research Letters（2022）

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摘要

We present initial results of low-energy ion observations from BepiColombo's first Mercury flyby. Unprecedentedly high time resolution measurements of low energy ions at Mercury by BepiColombo Mio reveal rapid (a few seconds) and large (1-2 orders of magnitude) fluctuations of ion flux around the magnetopause and within the magnetosphere. Around the magnetic equator in the pre-midnight magnetotail, Mio observed plasma sheet ions consistent with previous observations. In the midnight magnetotail near the closest approach, Mio observed the co-existence of high-energy (similar to keV/q) and low-energy (更多

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关键词

Mercury, BepiColombo, Mio, magnetosphere, low-energy ions

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